Evidence-based

Immunoglobulin A

•Last Updated: October 13, 2024

Immunoglobulin A (IgA) is an antibody that is mainly secreted in mucous membranes that protect against infection from pathogens such as viruses and bacteria.

Last Updated:October 13, 2024

Research Snapshot

5,174 participants in 21 trials

Examine Evidence Grades

BProbiotics

C3 outcomes

D8 outcomes

Examine Database: Immunoglobulin A

Intervention	Grade	Evidence	Effect
Colostrum	D	Participants: 206	No effect
Selenium	D	Participants: 1431	No effect
Probiotics	B	Participants: 362	Large Increase
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Lactobacillus Casei		Participants: 131
Spirulina		Participants: 178
Umckaloabo		Participants: 25
Panax Ginseng (Korean Ginseng)		Participants: 38
Saffron		Participants: 89
Lactobacillus reuteri		Participants: 23
Type-II Collagen		Participants: 228
Vitamin E		Participants: 32
Sauna		Participants: 15

Colostrum

No effect

Selenium

No effect

Probiotics